As a director, you have enormous scope to make it big. If you have even one successful film/play/show, it can make your career. However, this ultimately depends on what you bring to the table. Your story’s potential to make money depends on your skills and experiences.
You can start small and eventually find your way into the industry. You can choose to work with directors or assistant directors. TV, motion picture and theatre groups are always looking for assistants. The set-up is more formal for TV shows and movies as they are backed by production houses. Theatre productions may have an informal set-up as they are mostly created by small, informal, loosely-knit theatre groups.
If you want to work independently right from the beginning, it would be a good idea to enter short film contests and awards. This will help you build a reputation as these contests and awards are closely followed by people from the industry.
On the other hand, many senior directors are on the hunt for passionate people who share their interest. You can choose to work with them as assistants and start gaining experience. As you learn more about film/television direction and theatre play direction, you can start working on your projects.
People are hungry for entertainment. Production houses are always on the hunt for talented leaders who can work on TV shows or movies. There are hundreds of different projects that you could work on. It boils down to your skill in creating mesmerising stories- no matter the platform.